Particles in the drinking water system: from source to discolouration
Particles in the drinking water system: from source to discolouration
复制标题
饮用水系统中的颗粒：从源头到变色
DOI：
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发表时间：
2004
期刊：
影响因子：
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通讯作者：
J. V. Dijk
中科院分区：
文献类型：
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作者：
J. Vreeburg;P. Schaap;J. V. Dijk
管网中的水变色是由于高水平的悬浮颗粒导致浊度增加。水力事件，如管道爆裂或消防栓使用施加额外的剪切应力在网络中的沉积层，导致颗粒再悬浮。网络或部分网络的质量平衡可用于分析不同的来源和累积过程;本文重点讨论泵站作为颗粒的“质量输入”的贡献。在荷兰水务公司的联合研究计划（BTO计划）中开发了三种分析方法：浊度连续监测法、质量沉降势法和再悬浮势法。浊度和颗粒计数的连续监测使得能够分析颗粒源的相对贡献，例如铸铁的腐蚀。质量沉降潜力和再悬浮潜力方法增加了对实际沉积物负荷和实际变色风险的了解。这些方法的进一步发展将增强对网络中颗粒的来源和归宿的了解，从而能够制定有效的措施来防止变色和相关的水质问题。
Water discolouration in networks results from increased turbidity due to high levels of suspended particles. Hydraulic incidents such as pipe burst or hydrant use impose extra shear stresses on sediment layers in the network, leading to particle resuspension. The mass balance over a network or parts of the network may be used to analyse the different sources and accumulation processes; this article focuses on the contribution of the “mass in” from the pumping station as particles. Three analysis methods have been developed within the joint research program of the Dutch water companies (BTO-program): the continuous monitoring of turbidity, the Mass Settling Potential Method and the Resuspension Potential Method. The continuous monitoring of turbidity and particle counting enable an analysis of the relative contribution of sources for particles, e.g. corrosion of cast iron. The Mass Settling Potential and Resuspension Potential methods add insight into actual sediment load and actual discolouration risk. Further development of these methods will enhance knowledge of the origin and fate of particles in a network, enabling the formulation of effective measures against discolouration and associated water quality problems.